asp.net Cookie操作类

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
namespace Xyz.Common
{
/// <summary>
///cook 的摘要说明
/// </summary>
public class cooks
{
/// <summary>
/// 保存一个Cookie
/// </summary>
/// <param name="CookieName">Cookie名称</param>
/// <param name="CookieValue">Cookie值</param>
/// <param name="CookieTime">Cookie过期时间(小时),0为关闭页面失效</param>
public void SaveCookie(string CookieName, string CookieValue, double CookieTime)
{
HttpCookie myCookie = new HttpCookie(CookieName);
DateTime now = DateTime.Now;
myCookie.Value = CookieValue;

if (CookieTime != 0)
{
myCookie.Expires = now.AddDays(CookieTime);
if (HttpContext.Current.Response.Cookies[CookieName] != null)
HttpContext.Current.Response.Cookies.Remove(CookieName);

HttpContext.Current.Response.Cookies.Add(myCookie);
}
else
{
if (HttpContext.Current.Response.Cookies[CookieName] != null)
HttpContext.Current.Response.Cookies.Remove(CookieName);

HttpContext.Current.Response.Cookies.Add(myCookie);
}
}

/// <summary>
/// 取得CookieValue
/// </summary>
/// <param name="CookieName">Cookie名称</param>
/// <returns>Cookie的值</returns>
public string GetCookie(string CookieName)
{
HttpCookie myCookie = new HttpCookie(CookieName);
myCookie = HttpContext.Current.Request.Cookies[CookieName];

if (myCookie != null)
return myCookie.Value;
else
return null;
}

/// <summary>
/// 清除CookieValue
/// </summary>
/// <param name="CookieName">Cookie名称</param>
public void ClearCookie(string CookieName)
{
HttpCookie myCookie = new HttpCookie(CookieName);
DateTime now = DateTime.Now;

myCookie.Expires = now.AddYears(-2);

HttpContext.Current.Response.Cookies.Add(myCookie);
}

}
}